Section 154.310 - Cargo piping systemsCargo liquid or vapor piping must:
(a) Be separated from other piping systems, except where an interconnection to inert gas or purge piping is required by § 154.901(a) ;(b) Not enter or pass through any accommodation, service, or control space;(c) Except as allowed under § 154.703 , not enter or pass through a machinery space other than a cargo pump or compressor room;(d) Be in the cargo area except:(1) As allowed under § 154.703 ;(2) Bow and stern loading piping; and(3) Emergency jettisoning piping.(e) Be above the weather deck except:(1) As allowed under § 154.703 ;(2) Pipes in a trunk traversing void spaces above a cargo containment system; and(3) Pipes for draining, venting, or purging interbarrier and hold spaces;(f) Connect into the cargo containment system above the weather deck except:(1) Pipes in a trunk traversing void spaces above a cargo containment system; and(2) Pipes for draining, venting, or purging interbarrier and hold spaces.(g) Be inboard of the transverse cargo tank location required by § 154.235 , except for athwartship shore connection manifolds not subject to internal pressure at sea.